Side-by-side comparison · Coding & Dev Tools
Amp vs Claude Code vs OpenAI Codex
Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.
Comparing 3 tools, the maximum.
At a glance
Pick it if: Developers and engineering teams working on large codebases who want agents running in the background, not tied to their laptop.
Pick it if: Anyone building software, from first-timers to senior engineers, who wants an AI that does the work itself.
Pick it if: ChatGPT subscribers who want a coding agent without paying for a second subscription.
Claude Code scores highest overall, but OpenAI Codex gives you more for your money. Which one is right comes down to what you value most.
Overview
| Attribute | Amp | Claude Code | OpenAI Codex |
|---|---|---|---|
| In one line | A coding agent that keeps working on remote machines after you close your laptop. | An AI agent that works inside your project: it reads, writes and runs the code for you. | OpenAI's coding agent. Hand it a task and it works away while you do other things. |
| Pricing model | Freemium | Paid | Freemium |
| Starting price | $20/mo | $20/mo | $8/mo |
| Free plan | Yes | No | Yes |
| Works with Claude Code | Yes | Yes | No |
Rating breakdown
Our scores out of 5. The higher bar in each row is highlighted.
| Attribute | Amp | Claude Code | OpenAI Codex |
|---|---|---|---|
| Overall rating | 4.0 | 4.4Winner | 4.2 |
| Ease of useHow quickly someone non-technical gets value from it. | 3.0 | 3.5 | 3.5 |
| FeaturesHow completely it covers its own job, and how well the pieces fit together. | 4.5 | 5.0 | 4.5 |
| Output qualityHow good the results are before you fix them. | 4.5 | 5.0 | 4.5 |
| Value for moneyWhat you get for the price, including the free plan. | 4.0 | 4.0 | 4.5 |
| Speed & reliabilityHow fast it is and how often it falls over. | 4.0 | 4.5 | 4.0 |
Feature comparison
A tick means it does this today. A dash means we haven't checked.
| Attribute | Amp | Claude Code | OpenAI Codex |
|---|---|---|---|
| Access & platform | |||
| Free plan | Yes | No | Yes |
| Mobile app | Yes | Yes | Yes |
| Desktop app | Yes | Yes | Yes |
| Browser extension | No | No | No |
| API access | Yes | Yes | Yes |
| Teams & business | |||
| Team workspace | Yes | Yes | Yes |
| Enterprise plan or SSO | Yes | Yes | Yes |
| Connects to other apps | Yes | Yes | Yes |
| Open source or self-hosted | Yes | No | Yes |
| AI abilities | |||
| Works with your files | Yes | Yes | Yes |
| Understands images | Yes | Yes | Yes |
| Makes images | No | No | No |
| Makes video | No | No | No |
| Writes code | Yes | Yes | Yes |
| Runs agents or automations | Yes | Yes | Yes |
| Learns your brand or style | – | Yes | Yes |
| Works in many languages | Yes | Yes | Yes |
| Capabilities score | 13/ 17 | 12/ 17 | 14/ 17 |
Pricing
Plans as listed on each vendor's site when we last checked. Confirm before you buy.
| Attribute | Amp | Claude Code | OpenAI Codex |
|---|---|---|---|
| Plans | HobbyOur pick Free Developers with their own model subscription or keys. | ProOur pick $20/mo, or $17/mo billed yearly Trying Claude Code and light daily use. | Free Free A quick look at what it can do. |
Megawatt $20/mo Individuals who want Amp to host the machines. | Team From $20/seat/mo billed yearly, or $25 monthly Businesses with 2 to 150 people who want central billing. | Go $8/mo Occasional light tasks. | |
Gigawatt $200/mo Heavy users running many big jobs. | Enterprise $20/seat/mo billed yearly, 20-seat minimum Larger companies with compliance needs. | PlusOur pick $20/mo Anyone who already pays for ChatGPT. | |
Enterprise Custom Large companies with security and compliance needs. | Max From $100/mo Anyone running Claude Code for hours a day. | Pro From $100/mo Developers who hit the Plus limits. | |
API (pay as you go) Usage based Teams who want to pay only for what they use. | Business $20/user/mo billed yearly, or $25 monthly Teams of 2 or more. | ||
Enterprise Custom Large organisations. | |||
| Which plan to pick | Start on Hobby and link a ChatGPT or Claude subscription you already pay for. Move to Megawatt at $20 a month only when you want Amp to host the machines so tasks run while you're away. Teams can create a workspace at no extra charge. | Start on Pro. It is enough to build a small site or tool in evenings and weekends. If you hit the limit most days, Max 5x is the next step; it costs five times as much but usually works out cheaper than paying for the API directly. Max also lets you spend up to half your weekly limit on Fable, which Pro only gets through paid credits. | If you already have ChatGPT Plus, you have Codex: just try it. If you are choosing between this and Claude Code with no existing subscription, Plus at $20 and Claude Pro at $20 cost the same, so pick whichever chat assistant you prefer. If you outgrow Plus, Pro starts at $100 and has no five-hour limit for now. The $200 tier gives new subscribers less usage than it used to, and Ultrafast mode is only on the $500 tier. |
Key features
| Attribute | Amp | Claude Code | OpenAI Codex |
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Pros and cons
| Attribute | Amp | Claude Code | OpenAI Codex |
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Who each one is for
| Attribute | Amp | Claude Code | OpenAI Codex |
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Questions people ask
Which is better, Amp, Claude Code or OpenAI Codex?
Claude Code scores highest overall in our ratings (Amp 4.0/5, Claude Code 4.4/5 and OpenAI Codex 4.2/5). Amp is best for running several coding tasks in the background at once and working on big, messy codebases. Claude Code is best for building a whole feature, start to finish and fixing bugs you can't find. OpenAI Codex is best for background tasks in the cloud and starting a task from your phone.
Which is cheaper, Amp, Claude Code or OpenAI Codex?
Amp: There's a free plan, and paid plans start at $20/mo. Claude Code: There's no free plan. Paid plans start at $20/mo. OpenAI Codex: There's a free plan, and paid plans start at $8/mo.
How we compare
Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.
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